If the Army, Air Force, Navy engage in all out war with each other

Haha,just read a question like this on reddit(USA),so i was wondering what would happen,who would win?
P.S.Not trying to create ANY TYPE of rift,just a hypothetical scenario(for fun)
Question:If the Army, Air Force, Navy (and Marines), and Coast Guard were to get into a fall out war,who would win?
My money is on the navy